Precipitating apparatus



Oct. 26 ,1926.

l. HECHENBLEIKNER PRECLP ITATINGr` APPARATUS Filed Feb. 7, 1923 Patentedl Oct. 26, 1926.

4UNITED STATES INGENUIN HECHENBLEIKNER, F CHARLOTTE'NORTH CAROLINA.

PARENTl oFFl PRECIPITATING APPARATUS.

Application led February 7, 1923. Serial No. 617,550.

My invention relates to precipitating apparatus, and more especially to apparatus or appliances for precipitating liquids, such as acids, including sludge acids.

An important object of the invention is to provide a substantially unitary apparatus l for precipitatingfrom the concentrated gases of acids or other liquids, vapor or liquid particles of the for'return to the concentrator for further treatment.

The characteristics and advantages of the invention are further suiiciently explained in connection with the following detailed deof apparatus embodying the invention in one form. l

Figure 2 is a composite vertical section in the plane 2-2, Fig. l.

Figure 3 is a top plan of thetower with F 30 certain of the electrode supports or conductors removed. p

Figure tis an enlarged detail in plan of the top of the ues showing the arrangement of the collecting electrodes.

The lower part of the apparatus as shown in Figures l and 2 is a concentratingapparatus which may be of any preferred construction, including a concentrating chamber'C and a preheating tower T provided with brick checkerwork 18 resting onl arches 19. The dilute or unconcentrated acid may be introduced the checkerwork and is heated 'down through the checkerwork in.counter current relationpto the hot gases ascendin therethrough. The concentrating chamber is provided with horizontal iues separated by. walls 2 3. Hot gases supplied through a manifold 28 are rblown through pipes in iues'25 to heat fand concentrate the acid.

as it flows acids carried therein,"

scription of the accompanying drawings,'

the art will understandv Figure l is a vertical longitudinal section into the stack or tower abovev The hot checker-work entrain or carry along with them a certain percentage of acid in the form of vapor or liquid particles. It has been heretofore iquid particlesby electrical treatment in separate apparatus requiring the diversion of hot gases to such stitutes substantially an independent mechanism or installation. My invention provides for the combination with or incorporation in the concentrating apparatus itself of electrical precipitating means or apparatus by means of which the gases are freed of liquid or acid vapor or particles by electrical precipitation and discharged in an entirely or substantially acid-free condition, the precipitated liquid or acid being returned directly to the concentrator for further treatment therein To this end in the present embodiment of the invention the above described or other suitable concentrating apparatus having a tower T is provided with an extension T of the tower which consists simply in vertical l extensions of the walls of the tower T; The

electrical precipitating means is located in the upper part of the `tower or this purpose a plurality of spaced aches of acid resistingbrick or other suitable ,.material, are arranged to intersect the tower extension T at a suitable level. A system of dues 51 of acid-proof brick or other suit- 4able non-metallic material, is built upon the arches by constructing intersecting partition `walls-52 at properly. spaced intervals, the

ues so produced being most conveniently of square cross section. A discharge or pre cipita'ting AelectrodeY in the form of a lead wire` 53 extends centrally through each of the flues. At their upper ends these electrodes are connected to any suitable conductin supports such as lead covered pipes 54 an t ese pipes are in turn carried by g -one ormone transversely arranged su porting/conductors 55 in the form of lea ered pipe, 4the `ends 'of which extend out ithrough the walls ofthe tower and are con- .nected'to any suitable source of high tension or high lfrequency current (notl shown) The COV- main conductorsfor supports `55 may be inproposed to precipitate suchgases `ascending through the f apparatus which conextension T.

sulated in any suitable way, for instance, by high capacity insulators 56, and ample Vclearance may be provided around the conductors Where they pass throughthe tower walls. Y

. The conductors 53 are conveniently tensioned and caused to hang straight and centrally in the lues by lead weights 58 secured 'its upper end to the upper supporting conductors such as certaln of the pipes 54.

lso

While after the fine surfaces have become molstened, these moistened surfaces will act toa certain extent as collecting electrodes of opposite polarity to the wire discharge electrodes 53, it is preferable to provide in each ue at least one collecting electrode in the form of a lead wire 65, and most desirably four of these'wire electrodes are arranged in each flue, one in each corner, or reasons hereafter explained. The adjacent collecting electrodes of adiacent fines are interconnected by any suitable cross connections 66 and suitable leads or conductors 6"(` are run off from the cross ,connect-ions and grounded or connected to the other side of the circuit which supplies central electrodes 53. The collecting electrodes and their connections are omitted in Figures 1 and 2 to avoid complicating the drawings by plurality of single lines.

'Ihe described arrangement of the collecting electrodes at the four corners of the rectangular flues serves to equalize the precipitating effect since. as above stated. the wet brick or masonry flue surfaces act to a considerable extent as collectors` and the lead electrodes of higher conductivity or electrical capacity at points furthest removed from the central electrodes. tend to increase the precipitating eilt'ect at these remote poi-nts. and so to substantially equalize the .precipitating effect ofv the entire Hue' surface.

The hot gases rising through the checkerwork 18 pass up `through thev plurality of nues-51 which divide the gases into areas of smallcross section, and the high tension c ect produced between the vcentral electrodes Aand the collecting electrodes or the Y entire iue surfaces. as sabove described, causesa very complete precipitation of `the acid or liquid particles upon the iiue walls, andthis liquid runsdown and drops upon the checkerwork and so returns directly to the' coneentrator for .further concentration' therein. i In the particular embodlment of the .1n-

vention here' shown the wncentrator Lconsists substantially-of two units AV andB as best shown in Fig. 2,being separatedby a partiingly, or substantially within the limits of' the tower section A or B of Fig. 2.

I claim:

1. An electrical `precipitating apparatus of the Vclass described, comprising a staclq,

a system of parallel vertical iues of non-V conducting material therein, each polygonal in cross section an electrode wire 'arranged centrally in. each flue, conducting supports for theupper ends of said wires, a weight at the lower end of each wire and means independent of the Weights for spacing and preventing lateral movement of the-lower ends of the wires.

2. An electrical precipitating apparatus of the lclass described, comprising a stack, a sys'- tem of parallel vertical iues of non-conducting material therein, each polygonal in cross section an electrode wire arranged centrally per ends of said wires, a weight at the lower ends of each wireand a gridwork lndependin each flue, conducting supports for the upent of the weights holding the lower ends of the wires in properly spaced relation.

3. Precipitating apparatus of the classl described, comprising a tower having checkerwork therein providing a plurality of parallel fines-polygonal in cross section and of substantially non-conducting material, a central electrode wire passingl through each flue. a 'collecting electrode extending longitudlnally through each ue at each angle thereof. and conductors of opposite polarity connecting the central and the collectlng electrodes.

4. Precipitating apparatus of the .class described, comprising a tower, inc-ludlng a checkerwork of substantially non-conduct- -ing material, providing a plurality of parallel vertical tlues of polygonal crosssection,

acentral electrode wire passing through each liuc. means for retaining the central electrodes in substantially {ixed position, a p luralitv of collecting electrode wires extending longitudinally through 'each Hue in spaced relation against the wall thereof and substantially in the fine corners, means for tensioning each wire and Y conductors of opposite polarity connecting the central and collecting electrodes.

5. Precipitating Vapparatus of the `class jdescribed, comprising a tower, including a checkerworkof substantially non-conducting material, providing a. plurality of -parvlos Y 1,604,553A 'al' allel vertical liues of square cross Section5 a 6. In a tower having flues polygonal in' central electrode passing through each Hue, cross section and of nonconductmg material,

means for retainlng the central electrodes a discharge electrode at the center of each in sublstantially'xed position', and a. plu-` liue and collecting electrodes in the angles4 `I rality ofA collecting'v electrodes ezlttendirug;y of t e flue.4X A

longitudinally through each, flue in spaced t' Signed at New. York, in the countyof New relutionagainstthe wallthereof and located York and State of New York,l this 1st day eubstantiallyin the flue corners, and conofebruaryyA. D.1 923. ductors of opposite polarity connecting the incontra-l and collecting eelectrodes@ n IN 

